My friend has made a working laser that has the following
intellectual properties:
1) the more learned the individual is regarding laser...

My friend has made a working laser that has the following
intellectual properties:
1) the more learned the individual is regarding laser construction and
operation, the more confused and hostile they are regarding this new laser.
2) The less the individual knows about lasers, the more acceptable the
laser is.
This laser has absolutely *NO* optics, NO mirrors, no lenses; none,
na...

I have this circuit driving a pulsed laser. I want to compute the
energy dumped into the laser and the energy stored in the power...

I have this circuit driving a pulsed laser. I want to compute the
energy dumped into the laser and the energy stored in the power supply
capacitors. The ballpark is 120 amps into a 20 volt laser for a few
hundred microseconds.
What I did was create a "B" behavioral current source whose equation
is I = V(LASER) * I(LASER) which represents power, and dump that
into a 1 farad cap. The...

I saw a bug on my ceiling...
Which reminded me of a utube video of a spider chasing after a laser
spot.
So I get the laser pointer(actually a...

I saw a bug on my ceiling...
Which reminded me of a utube video of a spider chasing after a laser
spot.
So I get the laser pointer(actually a laser distance measurement tool)
and aim it near the bug.
It flies!
I don't like flies and when it relanded on the ceiling I decided to do
a less friendly test.. Laser blinding! muhahahhaha.... :P
I rested the laser spot all over the fly. A good 30...

Hi there - I was thinking about trying to design a laser driver over
the weekend. Unfortunately, I can't seem to find a spice model for a
laser...

Hi there - I was thinking about trying to design a laser driver over
the weekend. Unfortunately, I can't seem to find a spice model for a
laser diode, putting a bit of a squabash on that plan.
Anybody know where I can find one? Ideally I'd find one for a very
normal ~5mw red laser diode - like those you'd find in a cheap laser
pointer.
Thanks!
-Michael

Hello,
I'm designing some equipment which incorporates a 5 mW green laser module.
The problem is that all green lasers I've been able to find...

Hello,
I'm designing some equipment which incorporates a 5 mW green laser module.
The problem is that all green lasers I've been able to find so far are based
on a 1064 nm IR laser pumping a frequency doubler, resulting in a 532 nm
green beam.
This type of pumped green laser has lots of drawbacks: it's relatively
bulky, has a rather limited operating temperature range (roughly between 15
...

I heard about this on a Science 360 broadcast this morning.
A laser pointed at a graphene sponge propels it forward.
(not quite the same as...

I heard about this on a Science 360 broadcast this morning.
A laser pointed at a graphene sponge propels it forward.
(not quite the same as skysail)
The researchers have several theories as to why.
They do note the sponge emits electrons after being charged with
the laser. My read says the electrons are only emitted from one side,
the side the laser hits. Hmm?
Also works with focused sunli...

Hi all, after tribulations with HV opamps and leaky inductors,
my diode laser seems to be happy again.
Here's a scan of the laser through a...

Hi all, after tribulations with HV opamps and leaky inductors,
my diode laser seems to be happy again.
Here's a scan of the laser through a Fabry-Perot confocal cavity.
(F-P FSR ~ 380 MHz, finesse > 100.)
https://www.dropbox.com/s/6zpgdfs6cqus7ig/TEK0015.BMP?dl=0
I put 10 MHz side bands on the laser to give a scale.
Looking at the 'scope shot would I be safe in claiming
1 MHz (or bette

I tore up a computer mouse to get my grubby little paws on a laser.
Only.. I'm not sure it's a laser. Apart from testing the output for...

I tore up a computer mouse to get my grubby little paws on a laser.
Only.. I'm not sure it's a laser. Apart from testing the output for
coherence, is there a way to tell a laser diode from a light-emitting
diode?
Other than that, how do you drive these things? Is there some Internet-
accessible resource where this is explained? Usually, I begin my crawl
with Wikipedia, but on the subj...

Laser locking (control loops with two feedback paths.)
So I finally had a user ask about side locking our diode laser.
(That=92s where you...

Laser locking (control loops with two feedback paths.)
So I finally had a user ask about side locking our diode laser.
(That=92s where you lock the frequency to the side of an absorption
feature.)
Now, you can change the laser frequency in two ways. There=92s a piezo
stack that changes the angle of a diffraction grating. And you can
change the laser current.
The electronics is all set u...

I have a laser diode that is cooled by a fan and a heat sink. I have a small TEC lying around
and I would like to integrate that to the laser...

I have a laser diode that is cooled by a fan and a heat sink. I have a small TEC lying around
and I would like to integrate that to the laser diode head. How do I go about controlling the
voltage supply to maintain a stable temperature.
Thanks for you valuable input

Hi,
Here is an upcoming metal 3D printer that uses a laser for melting
metal powder layer by layer:
http://techcrunch.com/2014/07/18/matterfab/
Any idea on what type or even part# of laser this uses? There are a
couple spots in the video with a close up of it, 5minutes in.
cheers,
Jamie

One of the guys did a flea market run this weekend. He knew I was
looking around for a source for cheap laser pointer/toys, so I could
strip...

One of the guys did a flea market run this weekend. He knew I was
looking around for a source for cheap laser pointer/toys, so I could
strip the lasers out of them..
He found me a deal. 15 Laser pointer-Animal toys, for $20 bucks.
These are key chain things with end caps you can change project
images instead if just a point. The 3 button cells in each
package alone, is worth more...

Using 12bit DAC, I would like to have 32 microsteps.
I have mounted a laser on the shaft so I can see the laser beam
on my wall, where I have...

Using 12bit DAC, I would like to have 32 microsteps.
I have mounted a laser on the shaft so I can see the laser beam
on my wall, where I have 32 grid lines.
I've experimented, and it goes pretty well,
all 32 steps are more or less on grid - when I go right.
But when I turn back left, the laser dot moves fast,
then slow, then fast again - not on grid.
I haven't found anything on the ...

Well here is one: Use a selenium-coated laser printer drum pretty much as
intended. Impart a charge on it's surface, fire laser to erase...

Well here is one: Use a selenium-coated laser printer drum pretty much as
intended. Impart a charge on it's surface, fire laser to erase charge for a
0 or leave it for a 1, then use some kind of electrometer to read the bit
later. Recycle this back to the laser for recirculating memory.
I'm wondering if there is any way to make a large scale CCD shift-register
memory which can be made a...

For one of our instruments, Diode laser spectroscopy, (http://
www.teachspin.com/instruments/diode_laser/index.shtml)
We use a CCD camera and...

For one of our instruments, Diode laser spectroscopy, (http://
www.teachspin.com/instruments/diode_laser/index.shtml)
We use a CCD camera and little TV to image the NIR laser spot and
observe the Rubidium fluorescence. (Used to tune the laser to the
correct wavelength.)
So we didn=92t buy a lifetime supply of either the cameras or TVs and
now they are both disappearing. (about a year...